Seven-segment shows are one of the ho-hum methods to show the time. They had been cool for a little bit bit within the 70s, however by now, they’re a little bit bit outdated hat. That’s, until you get bizarre with it. This holographic seven-segment clock from [mosivers] qualifies neatly in that class.
Step one was to make the holographic phase shows, as a result of they’re not likely one thing you’ll be able to simply purchase off the shelf. [mosivers] achieved this by utilizing a package from LitiHolo, which lets you create holograms by taking pictures a laser at particular holographic movie. Solely, a number of upgrades had been made to make use of the package with a nicer purple diode laser that [mosivers] had available for higher efficiency. The seven-segment layouts had been fastidiously recorded on to the movie to type the essential numerals of the clock, such that illuminating the movies from completely different angles would gentle completely different segments of the numeral. It’s fairly concerned, nevertheless it’s defined properly within the construct video.
As for the timekeeping aspect of issues, an ESP32 was used, setup to question a community time server to remain correct. The microcontroller then instructions a collection of LEDs to gentle up as wanted to light up the related segments of the holographic movie to point out the time.
In the end, [mosivers] constructed a cool clock with a glance you received’t discover wherever else. It’s much more work than simply wiring up some basic seven-segment LEDs, however we expect the result’s value it. In case you fancy different bizarre seven-segment builds, although, we’ve bought loads of others within the until.
[Thanks to Moritz for the tip!]
